Roberts pieces together tales of 19th-century exploration, interviews with scientists, journal excerpts and her own observations and experiences in Antarctica over the last 20 years in these sweet and sparkling essays. The book is a paean to the continent, to Baden Norris, who first introduced her to Antarctica, and to the spirit of exploration. A professor at the California College of the Arts in San Francisco and Fulbright Fellow at Gateway Antarctica New Zealand, Roberts first sailed to Antarctica with Greenpeace in the 1980s.  (ANT272, $18.95)